JP2510927Y2 - Floor structure of cool box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a floor structure of a cold-insulating box body used for a freezing container or a cold-reservoir for accommodating and refrigerating a frozen or refrigerated cargo.

(Prior Art) Generally, the floor of a box for cold storage is provided in the front-back direction of the box on the top side of the floor so that cold air can be distributed and drained on the bottom side of the cargo to be stored in the box. It is composed of a floor material such as an aluminum extruded material in which a plurality of extending ridges are provided in parallel.

On the other hand, as a device for easily moving a load loaded on the floor by a forklift or the like, a loader device called a pallet loader has been conventionally used. This loader device is housed in a guide rail for guide mounted between two adjacent ridges in the floor mold, and is movable in the front-rear direction of the box.

By the way, conventionally, in mounting the guide rail for guiding the loader device as described above, a floor structure as shown in FIG. 7 has been adopted (see Japanese Utility Model Publication No. 60-41504). That is, in this conventional structure, the guide rail 1 having an inverted hat cross section is used as a guide rail for guiding the loader device.
, And the floor profile 3 is provided with two ridges 4 and 5 spaced at a sufficient distance to accommodate the guide rail 1.
Moreover, the height of the two ridges 6 and 7 adjacent to these ridges 4 and 5 is lowered by the thickness t of the flange 2 of the guide rail 1 and abuts on the bottom of the guide rail 1. A rail support portion 8 for supporting the guide rail 1 from below is integrally provided, and the bottom portion of the guide rail 1 is supported by the rail support portion 8, and both side flange portions 2, 2 of the guide rail 1 are provided with ridges 4, 4. It is supported on the upper surface of 5 and fixed with a countersunk head tapping screw 9 or the like.

Reference numeral 10 is a loader device, and a state before the load W is lifted is indicated by a two-dot chain line, and a state after the load W is lifted is indicated by a one-dot chain line.

(Problems to be Solved by the Invention) According to the conventional floor structure as described above, when the loader device guide guide rail is mounted between the two protrusions of the floor profile 3, the flange portion 2 of the guide rail 1 is attached. Is fixed to the upper surface of each of the ridges 4 and 5 by fixing the screws 9, so that it takes a lot of time and labor for the installation work, and the vibration of the floor during transportation of the cold insulation box by the vehicle causes Screw 9
Is easy to loosen, and when the screw 9 loosens, the screw head protrudes from the upper surface of the flange portion 2 and catches a load. Further, the flange portion 2 is provided on the floor material 3.
The condition that the height of the ridges 4 and 5 to which the screws are screwed is made lower than the heights of the other ridges 6 and 7 adjacent to them by the thickness t of the flange 2, 2 is the ridge 4,
Since the rail support portion 8 having a height that abuts on the bottom portion of the guide rail 1 and supports it while being placed on the upper surface of the rail 5, is formed, the floor material 3 can be manufactured. There were problems such as difficulties and high costs.

The present invention aims to solve such a problem.

(Means for Solving Problems) A floor structure of a box for cold storage according to the present invention is a box formed by a horizontal strip having a load-bearing support surface and leg strips perpendicular to the horizontal strip to have a T-shaped cross section. A loader device configured to move a loaded load to a predetermined position on the floor by forming a floor with a floor profile in which a plurality of protrusions extending in the front-rear direction of the body are provided in parallel on the base wall at required intervals. A guide rail having a substantially U-shaped cross section corresponding to a groove formed between two adjacent predetermined ridges in the floor mold, the guide rail being guided into the groove. It is a combination of them.

The groove for fitting the U-shaped guide rail is usually
It is formed by a base wall portion, both leg strips facing each other, and a protruding portion of the horizontal strip projecting from the leg strips to the opposite side. In addition, in this groove, an engaging concave portion for engaging the upper end of each side wall portion of the guide rail may be formed on the lower surface side of each protruding portion.

In addition, a plurality of ribs extending in the longitudinal direction of the groove may be provided on the upper surface of the base wall between the two protrusions forming the groove.

(Embodiment) An embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 shows a schematic cross-sectional structure of the entire floor of the box for keeping cold. In this figure, 11 is a floor material to which a guide rail 12 for guiding a loader device is attached. Two pieces are arranged side by side in the width direction of the box. Therefore, other floor molds 13, 14 are arranged on both sides of the floor molds 11, 11, and thus, the floor molds 11, 11 mutual, the floor molds 11, 13 mutual, and the floor mold. The mold members 13 and 14 are connected to each other by a known engaging structure. Further, the floor members 11 and 13 are each a floor main body 15 made of a heat insulating structure.
It is fixed to the top, and the floor members 14 at both ends are fixed to the floor body 15 and the side wall portion 16 of the box.

FIG. 2 is an enlarged view of the floor molding material 11. The floor molding material 11 has five substantially T-shaped protrusions 18 extending in the box front-rear direction on a flat base wall portion 17. , 19,20,21,22 are made of aluminum extruded shape members that are provided parallel to each other at required intervals, and these projecting ridges 18 to 22 have horizontal strips 18a to 22a whose upper surface forms a load supporting surface, The horizontal strips and the leg strips 18b to 22b perpendicular to the base wall 17 form a substantially T-shaped cross section, and of these strips 18 to 22, the strips 18, 19 are formed. The guide rail 12 for guiding the loader device is fitted in the groove 23 formed between them over substantially the entire length of the groove 23.

The groove 23, the base wall 17, and the leg strips 18b facing each other,
19b and a horizontal strip 18a, Ashijo piece 18b of 19a, are formed by opposing projecting portions 18a ₁ projecting to the side of, 19a ₁ and from 19b, Thus guides fitted to the groove line 23 The rail 12 has a bottom wall portion 12a and both side wall portions 12b, 12b, and has an upward U-shape corresponding to the cross-sectional shape of the groove 23, and the guide rail 12 has large mechanical strength and wear resistance. It is formed of an excellent material such as an iron plate, a stainless steel plate, or a metal material corresponding to these. In addition, the protruding portion 18
The projecting lengths of a ₁ and 19a ₁ are shorter than the projecting lengths of the projecting piece portions 18a ₂ and 19a ₂ projecting in the opposite direction, and the projecting lengths of the projecting portions 18a ₁ and 19a ₁ are It is about the thickness of.

In order to fit the guide rail 12 into the groove 23, one end in the longitudinal direction of the guide rail 12 is brought to the one end opening of the groove 23 and inserted through the one end opening. Make sure to fit while sliding to. still,
A slight gap is formed between the inner peripheral surface of the groove 23 and the outer peripheral surface of the guide rail 12 fitted therein. In addition, as shown in FIG. 2, the protruding portions 1 of the horizontal strips 18a, 19a facing each other.
Guide rails fitted to the bottom edges of 8a ₁ and 19a ₁ and groove 23
The sealing material 24 may be packed in the gap between the upper and lower end surfaces of the side wall portions 12b, 12b of the twelve. However, it is preferable to make such a gap as small as possible and not to stuff the sealing material.

The guide rail 12 fitted in the groove 23 as described above
Is prevented from moving in the left-right width direction of the rail by the leg strips 18b, 19b on both sides forming the groove 23, and the inward projecting portions 18a ₁ , 19a _{1 of the} horizontal strips 18a, 19a are The movement of the rail in the height direction is prevented by the base wall portion 17, and since the outer peripheral surface of the guide rail 12 and the inner peripheral surface of the groove 23 are substantially in surface contact with each other, the contact friction causes the longitudinal movement. The movement in the direction is also blocked, so that the guide rail 12 is fixed by fitting into the groove 23.

Note that the guide rail 12 slides in the longitudinal direction due to the gap between the outer peripheral surface of the guide rail 12 and the inner peripheral surface of the groove 23,
If there is a risk of jumping out of the groove 23,
Appropriate stoppers for preventing the guide rail 12 from moving in the longitudinal direction may be provided at the front and rear ends of the longitudinal direction of 23.

3 and 4 show a state in which the loader device 10 is installed in the guide rail 12 fitted and fixed between the ridges 18 and 19 of the floor material 11 as described above, and FIG. In the figure, the state in which the cargo W is placed on the floor via the pallet P is shown by a chain line. Then, when the lever 10a is in the upright state as shown by the alternate long and short dash line in FIG. 3, the upper surface of the loader device 10 has a ridge portion 18 in the floor material 11 as shown in FIG. 4 (A).
The horizontal load strips 18a to 22a are located below the load supporting surface of the upper strips 18a to 22a, but the upper surface of the loader device 10 is tilted to the position shown by the solid line in FIG. As shown in B), the load is projected upward from the load supporting surface, whereby the load is lifted up and guided by the rolling of the roller 10b below the loader device 10 toward the back of the box floor.

In the above-described embodiment, the opposing protruding portions 18a ₁ and 19a ₁ of the horizontal condition pieces 18a and 19a of the ridges 18 and 19 for mounting the guide rail 12 in the floor material 11 are shortened to about the thickness of the guide rail 12. However, this is to ensure that the effective width of the guide rail 12 is sufficient, and it is not always necessary to make it so short, and the center of the horizontal strip is the same as the other ridges 20, 21, 22. The lengths of the protruding portions at both ends from the portion may be equal to each other.

In addition, as described above, the opposed protruding portions 1 of the horizontal strips 18a and 19a are
When the lengths 8a ₁ and 19a ₁ are shortened, the short cuts may be made by cutting after forming the extruded mold material instead of by extrusion as in the embodiment.

FIG. 5 shows a groove 25 between the ridges 18 and 19 according to another embodiment. The groove 25 includes the base wall 17, the leg pieces 18b and 19b facing each other, and the horizontal line. Of the pieces 18a, 19a, the leg pieces 18b, 19
It is formed by projecting portions 18a ₀ , 19a ₀ projecting to the opposite side from b, but the engaging recessed stripe portion 26 is formed on the lower surface side of the opposed projecting portions 18a ₀ , 19a ₀ of the horizontal strips 18a, 19a. , 26 are formed in a cross-sectional shape such that the tip ends of the facing protruding portions 18a ₀ , 19a ₀ are bent downward. The upper ends of the side walls 12b, 12b of the guide rail 12 fitted in the groove 25 are engaged with the engaging recesses 26, 26. According to this, the gap between the opposed protruding portions 18a ₀ , 19a ₀ and the side wall portions 12b, 12b of the guide rail 12 is closed, and the guide rail 12 is securely fixed in the groove 25, which causes rattling. There is no danger of

FIG. 6 shows a groove 27 according to another embodiment.
A plurality of ribs 28 extending in the longitudinal direction of the groove 27 are provided on the upper surface of the base wall 17 between the protrusions 18 and 19 forming the groove 27 at regular intervals in the groove width direction. According to this, when the guide rail 12 is inserted into the groove 27, the frictional force generated between the groove bottom surface (the upper surface of the base wall portion 17) and the lower surface of the bottom wall portion 12a of the guide rail 12 can be reduced. 12 insertion work becomes easy.

According to the floor structure of the present invention, when the guide rail is fitted in the groove between the two ridges of the floor profile, the guide rail has the ridges on both sides. Both rail strips prevent the rail from moving in the width direction, and the horizontal projecting portions of the horizontal strips prevent the rail from moving in the height direction. Since it is substantially in surface contact with the inner peripheral surface of, the contact friction also prevents movement in the longitudinal direction. Therefore,
When installing the guide rail, screws and other fasteners are not required, which facilitates the installation work and prevents the screws from loosening due to floor vibration, etc. as in the past, and therefore the loose screw heads There is no danger of catching a load on.

In addition, when the load is lifted and moved by the loader device installed in the guide rail, the bottom portion of the guide rail to which the load is applied is entirely supported on the base wall portion of the floor profile, and the base wall portion As a result, the entire load is borne by the load, so that there is no inconvenience that the ridge portion is deformed.

In addition, the floor profile is a very simple profile with a plurality of T-shaped ridges of the same height on the base wall, and the guide rails have a substantially cross-section. Since the rail is a U-shaped extremely simple rail, it is possible to easily manufacture these floor mold members and guide rails, and to reduce their costs.

Further, according to the floor structure of the present invention, in the two opposing projecting ridges forming the groove, on the lower surface side of the facing projecting portion of the horizontal strip projecting to the side opposite to the leg strip. By forming the engaging concave portion and engaging the upper end of the side wall portion of the guide rail with this, the gap between the opposed projecting portion and the side wall portion of the guide rail is closed, thereby intruding water into the inside. And the guide rail can be reliably fixed in the groove.

In addition, when a plurality of ribs extending in the longitudinal direction of the groove are provided between the two opposing ridge portions forming the groove, when the guide rail is inserted into the groove,
The frictional force generated between the bottom surface of the groove (the upper surface of the base wall portion) and the lower surface of the bottom wall portion of the guide rail can be reduced, and the guide rail insertion operation can be easily performed.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and is a cross-sectional view of the bottom of a cold-insulating box, FIG. 2 is an enlarged view of the floor mold shown in FIG. 1, and FIG. 3 is a floor mold. FIG. 4 (A) is an external perspective view of the loader device installed in the attached guide rail, and FIG. 4 (A) is an explanatory view showing the loader device in a state before lifting the load.
FIG. 4 (B) is an explanatory view showing the loader device in a loaded state, FIG. 5 and FIG. 6 are sectional views showing other embodiments, and FIG. 7 is a floor of a conventional cold-insulating box. It is sectional drawing which shows a structure. 10 …… Loader device, 11 …… Floor material, 12 …… Guide rail, 17 …… Base wall part, 18 to 22 …… Projection part, 18 a to 22 a ……
Horizontal strips, 18b-22b …… Leg strips, 23,25,27 …… Grooves, 26
...... Engagement groove, 28 ...... Rib.

Claims (4)

(57) [Scope of utility model registration request] 1. A plurality of projecting ridges formed in a T-shape in cross section and extending in the front-rear direction of the box are required on a base wall portion, the horizontal strip having a load supporting surface and a leg strip perpendicular to the horizontal strip. A guide rail for guiding a loader device configured to move a loaded load to a predetermined position on the floor while forming a floor portion with the floor members which are provided in parallel at intervals, and which are adjacent to each other in the floor members. The floor structure of the cold-insulating box body in which a guide rail having a substantially upward U-shaped cross section corresponding to the groove formed between the two ridges is fitted into the groove. 2. The groove is formed by a base wall portion, both leg strips facing each other, and a protruding portion of the horizontal strip projecting to the side opposite to the leg strip. The floor structure of the box for cold storage according to 1. 3. The groove is formed by a base wall portion, both leg strips facing each other, and a protruding portion of the horizontal strip projecting to a side opposite to the leg strip, and The floor structure of the cold-insulating box according to claim 1, wherein an engaging groove is formed on the lower surface side of each of the projecting portions to engage the upper end of the side wall of the guide rail. 4. A plurality of ribs are provided on the upper surface of the base wall portion so as to extend in the lengthwise direction of the groove between the two protrusions forming the groove. The floor structure of the box for cold storage as described in 3.